Portable sewing machine



l 7- H. M. KILPATRICK I 2,091,?94

PORTABLE S EWING MACHINE Filed July 1:5, 1931 e'sheets-sneet 1 Sept. 7, 1937. H. M. KILPATRICK 2,091,994

PORTABL E SEWING MACHINE Y Filed July 15, 1951 e Sheets-Sheet 2 Sept. 7, 1937. H. M. KILPATRICK PORTABLE SEWING MACHINE Filed July 1:5, 1951' e sheets-sheet-z' p 1937- I H. M. KILPATRICK- 2,091,994

PORTABLE SEWIING MACHINE Filed July 13, 1931 6 Sheets-Sheet 4 H. M. KILPATRICK 2,091,994

, PORTABLE SEWING MACHINE Filed July 15, 1931 6 Sheets-Sheet 5 Sept. 7, 1937. H. M. KILPATRICK 2,091,994"

PORTABLE SEWING MACHINE Filed July 13, 1931 e Sheets$heet 6 awuantoz .lllllll Patented Sept. 7, 1937- UNITED STATES PATENT OFFICE,

49 (Claims.

This invention relates to portable sewing machines, and has for its object to provide a convenient full-size machine foldable to occupy a very small. space.

This machine has full size under-arm area, and is provided with self-contained motor drive and control, and bobbin winding and feed regulatory mechanisms, and when folded occupies a space ten times smaller than that of other sewing machines having as great under-arm area.

In the accompanying drawings,

Fig. 1 is a perspective view of the machine folded; Fig. 2 is a front elevation operative position;

Fig. 3 is a plan of the machine as in Fig. 1;

Fig. 4 is a sectional view approximately on the line 4-4 of Fig. 6, and partly in elevation;

Fig. 5 is a plan-showing the machine folded, parts being removed;

Fig. 6 is a plan, partly of the machine in in section, showing the machine in. operative position, parts being removed;

Fig. 7 15,15. fragmental plan showing the ma- 1 chine arm;

Fig. 8 is a fragmental end elevation partly in section on the line 8--8 of Fig. 4;

Fig. 9 shows a horizontal section on the line 9-9 of Fig. 4;

Figs. 10, 11, 12, 14, 15 and 1'7 shows sections taken approximately on the lines |-||l, I, |2--|2, |4|4, |--|5 and of Fig. 4;

Figs. 13 and 16 are sectional views taken approximately on the lines |3-|3 and Iii-I6 of Fig. 18 is a sectional view taken approximately on the line |8--|8 of Fig. 4, looking in the direction of the arrows of said line;

Fig. 19 is a sectional view taken approximately Fig. 22 isa side elevation of the electric re- I sistance block.

I The sewing machine head and its drive mechanism are carried by a combined case and base I!) (Fig. 2) having a fairly thin bottom or bottom wall II, and fixed front, back and end. walls l4, I5, I6 and 11 (Fig. 3). A rear bed plate or board I 8 is hinged as at l9 to the top edge of said rear wall and has a width eqiial to the width or the depth of the case.

The sewing machine head comprises a feed and stitch forming mechanism housing or support 2| (Fig. 3), a standard 23 (Fig. 2), an arm 23 and a needle bar head 24, all of small-front to rear dimensions not greater than the depth of the case, all of. the outside dimensions of the 5' machine head being such that the machine head will substantially snugly fill the case when the machine is folded as in Figs. 1 and 5. Hinges 25 connect the feed housing near its upper rear edge with the front edge of the rear bed plate 18,10 whereby the machine may pivot from lying position (Fig. 5) within the case to standing position (Fig. 4) forward of the forward'edge of the rear bed plate, with the top bed-wall 21 of the feed housing flush with the rear bed plate l8, and the bottom face of the feed housing on said thin bottom it.

A front bed plate 30 (Fig. 3) 'is hinged as at 3! at its front edge to the top edge of said front wall it of the case, and when closed lies flush with said top bed-wall 2'1. The front bed plate is opened forwardly to permit the machine head to swing from the position of Fig. 5 to Fig. 4.

A bracket of the front edge of the left or needle-end-wall N5 of said case and adapted to lie against the end wall may be moved to an outer'position where it is stopped by a feeding brace or strap 36 in the plane of the front wall 16 (Fig. 3), in which position it supports a main cover board hinged to the top edge of said needle-end-wall and adapted, when closed, tolie against and cover said bed plates I8 and 30 (Fig. 1) or when in operative open position, to lie in the plane of the bed plates and rest on said bracket in said outer position as in Fig. 2.

The handle 31 of the machine is mounted on the back wall 15, which becomes the top wall when the case is closed and carried, or disposed as in Fig, 1.

When the machine is to be used the case is placed as in Fig. 2 with its bottom it lying on a piece at (Fig. 2) hinged at one end 25 table or similar support and its various parts the cross hatching of the drawings, the standard 22 and the bed portion 21 (Figure 4) are integral, or one-piece, with each other, and the connecting web 40 and the webs 44 and 45 (Figures 5 and 14), are integral with each other. The cross-hatching just below 210, of Figure 19, and the absence of dividing lines between the web 45 and the connecting web 42 of Figure 6, show that the bed 21 is one-piece, or integral, with the web 45. Figure 4 shows that parts 22, 23 and 24 are integral, or one-piece, with each other. Figures 4'and 18 show that parts 22 and 46 are one-piece with each other. Therefore, parts 22, 23, 24, 44, 45, 21, I46 (Figure 4) and 46 are integral, or onepiece, with each other. The needle bar 55 (Fig. 8) reciprocatory in the needle bar head 24 is linked at the upper end by a pair of links 56 to the active end of the needle lever 5|.

A presser bar 58 vertically movable in the rear of the needle bar head is provided with a presser foot 59, and a lifting block 60 fast on the presser bar just above the lower lug 6| of the needle bar head, said block being provided with a projecting lug 62 having a lower shoulder. A lifting lever 65 pivoted as at 66 on the end face of said lower lug 6| .just under said shoulder is provided with a cam edge comprising nornial faces 61 and 68 respectively engaging the shoulder when the presser bar is up or down and held at a slight rearward angle from the presser bar, said cam faces 61 and 68 being slightly extended causing a slight raising of the presser bar when the lifting bar is pressed inward to the position of the dotted lines 65 thus permitting the lever to be pressed inward, from either upper or lower position, when the machine head is housed and front bed plate 30 is closed thereon and against said lever.

A take-up shaft 10 (Fig. 4) passingtransversely through a bracket 1| on the arm bears fast thereon, the take-up lever 12 at all times remaining throughout its movement within the boundaries of the machine head to prevent any interference with housing the head. A cam arm 13 (Figs. 4 and 7) fast on the rear of the take-up shaft between the machine head arm 23 and the needle lever 5| is caused, by the action of the spring 14, to engage an antifriction roller 15 on the needle lever whereby the take-up lever is reciprocated as the needle lever reciprocates.

A tension screw 16 (Fig. 8) fast in the front face of the lower part of the needle bar head carries a tension adjusting nut 11 on its outer end, a pair of tension disks 18 on its inner part, and a spring 19 compressed between said nut and the outer disk for yieldably pressing the disks together on the thread 80 (Fig. 4) therebetween.

A U-shaped spring spool bracket 85 (Figs. 4 and 20) having a. short arm 86 pivoted on a hinge member 81 fast on the lower face of the arm 23, has a yoke 88 disposable to the rear of the needle lever and a flat, hooked support-arm 89 adapted to clamp in a notch 80 on the top face of the machine head arm. A spool-receiving spindle 9I fast on and perpendicular to the support-arm 89 carries at its top a spring latch 92 adapted to hold the spool 93 thereon.

The machine is threaded as follows: The spool of threadis slipped on the spindle, over the spring latch, the latch snapping back to its outer position. The thread is then carried around the back turned hook 95, thence downwardly in the groove 96, and then between the tension disks 18, around the hook 91, through the hooked end 98 of the lever 12, and thence through the hooks 99, I00 and IOI to the needle. I

When the machine is being closed, the front bed plate 30 forces the spool to a position below the machine arm (Figs. 5 and 20) in which position the spring latch 92 prevents the spool from falling off.

A gear I04 (Fig.4) on the left hand end of the main shaft 48 meshes with a pinion I05 carried on a short shaft I06 disposed in bearings of webs I01 and I08 and provided with a bevel gear I09 at its left hand end engaging a miter gear IIO on a stud shaft III carrying on its upp r end a rotary hook or loop taker I I2 revolving at twice the speed of the main shaft adjacent to the path of the needle eye and carrying the bobbin I I3.

A pressure rock shaft 5 (Figs. 4, 8 and 11) mounted in bearings in the webs I01 and I08 carries fast on its right hand end a yoke lever II6 (Fig. 11) comprising spaced parallel contact members II1 engaging an eccentric cam II8 fast on the main shaft 40 for rocking the rock shaft.

A feed rock shaft I 20 (Figs. 4 and 8) disposed in bearings in said webs 44, 45, I01 and I08 is rocked in a manner presently to be described. Front and rear parallel supporting levers I2I and I22 (Fig. 8) mounted respectively loose and fast on the left hand ends of said pressure and feed rock shafts I I5 and I20 carry a reciprocatory frame I25 connecting and pivotally mounted on the upper ends of the levers and carrying undercut vertical guides I26 (Fig. 9) fast on the inner face of said frame. A post I21 vertically slidable between said guides carries a toothed feed dog I 28 (Fig. 8) fast onthe top of the post.

The frame is steadied against lateral tilting on the levers |2I and I22 by means of a cradle piece I29 formed on the rear of the lower edge of the frame I25 and passed under the loop taker and pivotally secured to the upper end of an arm I30 fast on the shaft I20. A rearwardly pointing oscillating arm I32 fast on the pressure rock shaft next to the supporting lever has pivotally connected to its free end a link I33 linking said arm to the post I21 whereby when the rock shaft is rocked the post and feed dog are vertically reciprocated.

A forwardly projecting supporting arm I35 (Figs. 4 and 17) is mounted fast on right hand end of the feed rock shaft near the standard. An inverted yoke lever or U-lever I36 pivotally mounted at the mid-part of its yok'e I31 to the free end of said supporting arm- I35 comprises long front and short rear parallel arms I38 and I39 provided at the right hand face with a pair of parallel contact lugs I40 and HI engaging an eccentric cam l42 -fast on said main shaft 48 to give vibratory movement to said long rm I 38. Said long arm I38 projects into the standard 22 and carries on its upper end a roller I45 disposed adjacent to the inner wall I46 of the standard.

A guide frame I41 intermediately pivotally. mounted against the inner wall of the standard on a pivot bolt I50 is provided with a lower transverse inclined arcuate slot I5I receiving said roller I45 to'give up and down movement to the I projecting end I66 of said worm carries fast thereon a feed regulating head I68 whichmaybe rotated to change the angle of said arm and slot thereby to change the amount of up and down movement of the roller, the yoke lever and said supporting arm, and consequently the amount offront to rear movement of the frame I25 and the feed dog I28. v

A rightwardly castellated collar I65 fast on an intermediate part of the main shaft 48 meshes with the castllations I66 of a castellated clutch gear I61 loosely rotatably and slidably mounted on said main shaft and provided with a friction flange I68 between its gear teeth and said castellations I66. A spring I18 between the gear I61 and the web 45 yieldably holds the gear in clutch. A motor carrying frame I19 (Fig. 5) provided with a pair of forwardly projecting lugs I12 hav ing annular projections I13 engageable in annular bearing grooves 18 of the webs and movable leftwardly therefrom, for detaching the motor frame, is also provided with a pair of short bearing lugs I15 and I16 between said pivoting lugs.

A bolt block' I11 detachably secured by a screw I18 between the left hand lug I16 and a the adjacent web prevents said leftward movement and thus holds the motor in place. This block is detached if the motor frame is removed A countershaft I88 (Fig. 4) rotatably mounted in said lugs I15 and I16 carries a worm wheel l8! and also a pinion I82, the latter meshing with said clutch gear I61. A horizontal motor magnet frame I85 carried in said motor frame I1I carries therein an elongated high speed armature I86 having a frontwardl'y disposed commutator I81'andan armature shaft I88 rot-atably mounted in the yoke pieces I89 and I98 of the magnet frame. A worm I8I on said armature shaft meshes with the worm wheel IBI. As the'frames I'II' and I85, the yoke pieces I89 and I98, the shaft I88, the armature I86, pole pieces I92 and field coils I93, all lie in the same plane, the height or thickness of the motor is very small.

5 A brush holder I95 (Fig. 21) disposed below the commutator I81 and having its ends Hit-secured to said magnet frame in lower recesses 'I91 and I98, isprovided with diametric open-ended tubula'r bushing holders 288 radial to the commutator 1 and carrying insulating bushings 28I fast in said holders, said bushings carrying conducting brush holders 282 having closed outer'ends. Brushes 284 and 285 mounted in said holders 'yieldably engage the commutator under the action of 5 springs 286 compressed between the brushes and said closed ends.

A porcelain resistance block 281 (Fig. 5) in said carrying frame "I to the left of the motor is provided with end tenons 288 and 288 engaging in suitable mortises of the frame. Said block carries a staggered series of contact points 2I8 and 2H interposed in series with resistances (not shown) disposed to the rear part of the block. Heat generated in the resistances may pass out through the ventilating opening 2-I3 in' the wall I6. A conducting stud 2 I in the front end of the block carries a contactor 2I6 engageable with said contacts .and adapted when in off-position to rest on an insulated seat 2" next to the mag- 0 net. A pair of alined bearing lugs 2I9 on the right hand member of the frame "I carry therein an arbor 228 having a squared front end 22I. A foldable knee-lever 222 carries on the end thereof a key 223 adapted, when the motor has moved forward to the position of Fig. 6. to pass through a key hole 224 and detachably' fit on said squared end. The knee-lever being foldable is containable within the case as shown in Fig. 5, but in use is unfolded and hangs down as in Fig.

2. An upwardly projecting shift arm 225 (Fig. J

21) carried on said arbor 228 is provided with a reduced upper end 226 on which'is pivotally received an end of a shift bar disposed, without contact, in transverse grooves 228 in the upper face of the magnet frame.

Upper and lower securing plates 238 and 23I (Fig. 22) are secured above and below insulating plates 232 secured on the upper and lower faces of the contactor 2I6; and the plate 238 is pivotally connected, by a bolt 233, to the adjacent end of the shift bar whereby the shift bar 221 is pivotally secured to and insulated from the con tactor 2I6. When the knee-lever is shifted, the contactor is moved to stop and start and regulate the speed of the motor. A spring 235 yieldably moves the contactor to off-position.

An insulated conductor 288 (Fig. 21) connects said conducting stud 2 I 5 with the adjacent brush 284, passes through a channel 282 in the bottom of the block and the adjacent lower transverse recess 243 of the magnet frame. Insulated cables .245 (Fig. 21) and 246 (Fig. 5) connected to the other brush 285 and the end contact -2 I8 pass to the right hand edge of the frame I1I where they are joined at 281 and may be coiled and stored in the case or may be passed out through a notch 288 (Figs. 5 and 6) in the right hand end wall of the case to a suitable electric socket or other source of current. The perforations 288 (Figs. 12 to 14) are for the reception of the'cable 246.

A horizontal clamping frame 258 secured on v the right hand member of the motor carrying frame I1I is provided with a longitudinal slot 25I disposed in a plane transverse to and extending nearly to the. main drive shaft. In said slot there is disposed a headed clamping screw 252 (Figs. 4, 15 and 16) received in an upright internally threaded tubular post 253 of an anchor pedestal 258 anchoredby bolts 255 to the bottom of the case and forming laterally extended base members.

'--A pair of intermediate pieces 251 formed on A the web 42 in the feed mechanism housing rest .on said base members of the pedestal and under said clamping frame 258 when the machine head' is in operative position (Fig. 15), and are adapted to slide off from said pedestal when the machine head is moving to folded position (Fig: 16).

Said clamping screw 252 with its head 268 engaging on top of the clamping frame 258 is adapted to clamp said pieces (Fig. 15) between the frame 258 and the pedestal 258, thereby to hold the motor rigid with the machine head and the case.

A slidable tube 265 (Figs. 4, Band 19) parallel to the main shaft 48 and slidably mounted in a lug 268 and an extension 261 of the web- '88 carries bearing bushings 218 in its ends in which bushings is rotatably mounted a bobbin winding spindle 215 provided with a split outer bobbinreceiving end 212 projecting a bobbin length from the tube'in alinement with an opening 213 in the end wall I1. Collars 215 on theflspindle engaging opposite ends of the tube hold the spindle in the tube. An upwardly disposed shift-arm'216 fast on the outer end of the tube has abackturned projection 211 (Fig. 18)

projecting through a rear-wall slot 218 and provided with a vertical manipulating cross-arm 288, whereby said tube may be shifted until the split end 212 projects from the case through the opening 213 to receive the bobbin to be wound.

A friction disk 28I (Figs. 4 and 12) fast on the inner end of the spindle thus comes in contact with said friction flange I68 of the clutch gear I61, whereby the winding spindle is rotated by said flange and said clutch gear I61 moved,

- against the spring I10, out of clutch with the castellated collar I65 to permit the'stitch forming and feed mechanism to remain at rest while the bobbin is being wound.

A flat spring 282 (Fig. 18) mounted on the inner face of said cross-arm 280 and engaging the back wall I59 of the standard yieldably forces said shift arm 216 .into one of the notches 284 or 285 (Fig. 19) on the inner face of the back wall at the limits of movement of the shift arm, thereby to hold the shift arm against accidental movement for operative or inoperative position.

The machine is disposed as in Fig. 1 for carrying by the handle 31, but it may be placed in any position, when thus closed, for storing or trans.- portation.

When the machine is to be operated, it is placed with the bottom II on a table'or the like; the bracket piece 34 is moved to the position of Fig. 2 to uncover the ventilating opening 2I3; the main cover board 35 is then opened, as in Fig. 2, to rest on the bracket piece 34; the front bed plate 38 is opened and moved far forward, the screw clamp 284 (Fig. 5) is removed, and the clamping frame bolt 252 is loosened so as to raise the head from the clamping frame 258. Next the operator, withhis fingers against the lower edge of the arm 23, raises the machine head to the position of Figs. 3 and 4 by pivotal movement on the hinges 25.

As the distance from the hinge 25 to the diagonally opposite edge of the feed support is greater than the depth of the case, the hinge 25 has to rise, which it can do by the pivotal movement of the rear bed plate I8 on the hinges I8.

After the machine is in the position of Fig. 4, but while the front bed plate 38 is still open, the clamping bolt 252 is screwed home thus clamping the clamping head, the clamping frame and the motor frame together, to firmly anchor the machine head in place.

Next the front bed plate 30 is closed to the position of Fig. 3 and secured by the button 295 (Figs. 4 and 6). Then the knee-lever is unfolded and the key placed on the squared end 22I with the knee-lever hanging down near the operator's knee.

Before commencing to sew, the machine may be clamped to a table or the like by means of the screw clamp 284 engaging over the front bed plate 30 at a point over the front right hand corner of the magnet frame, which will then be positioned as in Fig. 6, and furnish a backing for the front bed plate.

Before threading up the machine the spool bracket may be moved from the dotted line position of Fig. 20 to the solid line position.

The feed regulating head I 68 is adjusted to give the proper length of stitch; the lifting lever 65 rated, the work clamped under the presser foot, and the knee lever pushed to the left to force the contactor off the seat 2" (Fig. 5) into contact with first the low speed contact and then the higher speed contacts.

This brings about rotation of the main shaft, reciprocation of the needle, the take up lever and feed dog and causes the back and forward vibration of the lever arm I38 (Fig. 17) and the downward and upward movement of the roller I45 and the supporting arm I35, depending upon the relativepositions of the front and rear ends of the guide frame I41, thus rocking the supporting levers and carrying the feed dog back and forth at the same time that the arm I32 (Fig. 8) carries .the feed dogup and down, thus to feed the work.

When the bobbin is to be wound, the manipulating cross-arm 288 (Fig. 18) is pushed frontwardly to release the shift arm from the inner notch 284; the cross-arm is pulled rightwardly until the shift arm seats in the outer notch 285, thus bringing the friction disk 28I (Fig. 12) against the friction flange and the clutch gear I61 outof clutch. The bobbin is slipped on the split end 212, the motor started and the bobbin wound in the usual way, after which the cross-arm is carried back to its leftward limit.

Access to the bobbin is had through a door 285 (Fig. 6) hinged at 286 and held closed by a spring pressed latch 281 movable in a bore 288 in the bed 21. 4

' Attachments which may be carried in the base with the clamp 284 may be secured in operative position by a screw engaged in the screw hole 290.

Obviously light weight metals and materials may be used whenever practicable for the various parts of the machine, for reducing the weight of the machine as a whole.

The foregoing matter and the drawings herein are substantially as shown and described in my application Serial No. 672,613 filed November 3, 1923 and allowed November 12, 1930; and claims 1 to 9 herein were allowed in said application. Parts I to I8 and 25 to 36 of the drawings and the description thereof are substantially similar to matter in my copending application Serial N0. 499,386 filed September 9, 1921; and claims 10 to 16 herein are allowed claims transferred hereto from this last named application. Therefore the present application is a continuation in part of my said prior applications 672,613 and 499,386.

While the scope of the invention as claimed is not limited in some of the claims to dimensions and proportions, the machine is very compact. The machine as shown, particularlyin Figs. 4 to 22, has, when folded, outside dimensions substantially 10% x 8 x 1% inches, even though the under-arm space measures about x 8 inches. Thus the machine when folded occupies a space less than one-tenth that of. any other sewing machine of equal under-arm space known by me to have been described or in existence at the time said prior applications were filed.

While herein a particular type of machine has been described, the type of machine and details thereof may be greatly varied without departing from the scope of the invention as defined in the claims.

I claim as my invention:

1. A portable domestic sewing machine head comprising a rectangular sewing machine head of small maximum front to rear dimension, including a feed mechanism support, having a top bed portion, of equal small top to bottom and front to rear depth, a standard, an arm and a needle bar head; a main shaft in said support provided with an end crank having a throw smaller than said dimension; a needle lever intermediately fulcrumed on said arm; a pitman pivotally connecting the inner end of the lever and said crank; and a needle bar in said needle bar head linked to the active end of the needle lever, the distance of movement of the active end of said needle lever being such that said active end requires a space greater than said dimension; the space required by said end crank and the lower end of pitman in this movement being less than said depth and less than said dimension; whereby the needle may have a movement approximately as great as said dimension and all of the needle operating parts remain. between the front and rear planes of the head.

2. A portable domestic sewing machine comprising a combined case and base having front,

back and end walls,.and aflat bottom; a rec-' tangular sewing machine head pivotally connected to said base and adapted to lie flat on said bottom or stand on said bottom and including a needle bar head; a front and rear bed plate hinged to said'case and adapted to lie fiat on said needle bar head when the machine head lies on said bottom; a foot carried by said needle bar head; and a foot lifting lever carried by said needle bar head and normally projecting to the rear thereof when the head is 'upright and the foot is in raised or lowered position; said lever being engageable by said front bed plate after the head and front bed plate are lowered and 1 to be moved by said front bed plate to lie substantially between the front and rear planes of the needle. bar head.

3. A portable domestic sewing machine adapted to fit in a rectangular combined case and base having narrow front, back and end walls, and a flat bottom, said head comprising a rectangular sewing machine head adapted to lie fiat on said 35 flat bottom .and to snugly fit within the outline of said case, said head including a feed mechanism support having a top bed portion, a standard, an arm, and a needle bar support having its upper end joining the outer end of said arm to form an angle part adapted to substantially snug-- ly fit the adjacent corner of the case when the head lies fiat on said bottom; and'a needle lever,

a needle bar and a take-up lever on said head, all

remaining in all positions of movement within the boundaries of said head, and adapted to lie within the boundaries of said case when the head lies flat therein.

4. A portable domestic sewing machine comprising a combined case and base having front and back walls, and aflat bottom; a rectangular sewing machine head base and adapted to' lie flat on or stand on said bottom and including a feed mechanism support having a top bed portion, a standard, and an arm disposable against said front wall; a bed plate hinged to said case and adapted to lie in position to be flush with said top bed portion when the machine head is in upright operative position, and to lie fiat on said head and arm when the head lies on said bottom; and a spool spindle pivoted on the machine arm and disposable above said arm, and engageable by said bed plate as the head is lowered into the case, tozforce the spindle out of the way of said front wall:

5. A portable domestic sewing machine head comprising a feed mechanism support, a standard, an arm disposed a distance above saidsupport; the front to rear depth of said feed mechanism support being less than. one-fourth as great as said distance; and a feed mechanism at all times within the boundary-of said support and comprising parallel vrock shafts in the bottom of said support; parallel supporting levers mounted respectively loose and fast on said rock shafts, 75 and movable within said depths; a reciprocatory pivotally connected to said frame pivotally mounted on the upper ends of the supporting levers; a post slidable on said frame; a feed dog on the post, and an oscillating arm fast on the rock shaft of the loosely carried lever and linked to the post.

including a feed mechanism support having a top bed portion and a hollow standard; the front to rear and top to bottom depth of saidfsupport, and the front to rear depth of said head as a whole when upright being small; a feed mech-' anism entirely within said support and standard and including a feed rock shaft in the lower rear part of said support; a main shaft in said support; a forwardly extending supporting arm on the feed rock shaft; a yoke lever pivotally mounted at its yoke to the'supporting arm and comprising long at short parallel arms; a cam fast on said main shaft between said arms; a roller on the upper end of the long arm; a guide frame adjustably pivotally mounted on the inner wall of the standard andprovided with a slot receiving said roller.

7. A portable domestic sewing machine comprlsinga sewing machine head including a feed mechanism support, a standardand an arm; a main shaft. in said feed mechanism support; a horizontal magnet frame comprising poles and yokes all in the same "plane with the shaft and pivoted co-axial with said shaft, and movable into-the plane of the head and an armature in said magnet frame in said same plane having a diameter approximately equal to the depth of said frame and having an armature shaft rotatably mounted in said magnet frame and operatively connected and perpendicular to said main shaft. v

8. A portable domestic sewing machine comprising a rectangular case and base having front,

-- back and end walls and a thin bottom adapted to rest directly on a table or the like; a sewing machine head including a flat bottomed feed mechanism support having a top bed portion, a standard, an arm disposed a distance above said support anda needle bar head; means whereby said head is pivotally connected to said case and is adapted to lie or stand directly on said bottom; a main shaft in said feed mechanism support; a horizontal magnet frame comprising poles and I yokes all in the same plane with the base and pivoted co-axial with said shaft and lying on said thin bottom; an armature in said magnet frame in said plane having an armature shaft rotatably mounted in said magnet frame and operatively connected to said main shaft; means carried by said frame and said bottom adapted to clamp said head, motor and bottom together and thereby to hold said head directly on the bottom in standing or lying position; and a front bed plate hinged to said case in position to be flush with said top bed portion and to lie on said magnet frame when the machine is in operative position.

9. A portable domestic sewing'machine comprising a rectangular sewing machine head including a feed mechanism support having atop bed portion, a standard disposed against one end wall of the case; an arm said support; said head being adapted to lie flat or stand; the front to rear depth of said head as a wholewhen upright being small; a main shaft longitudinally disposed in said feed mechanism support; a horizontal motor adapted to lie in a.

' plane perpendicular to the headand pivoted coaxial with said shaft between said standard and needle bar head and having an armature shaft 6. A portable domestic sewing machine head' disposed a distance above connected to said main shaft; a bobbin shaft parallel to the main shaft and adapted to project .exterior to the head; and clutch means normally connecting the armature shaft to the main shaft and adapted to disconnect it from the main shaft and connect it to the bobbin shaft.

10. A portable sewing machine comprising a head including a feed mechanism support having a top Work face, a standard on said support, 10 and an arm disposed a normal distance above said s ppo t; a bed member connected to said head and disposable in the plane of said work face to form a continuation thereof, and movable to folded position close to said head substantially contacting against said support, standard and arm of the head; the maximum front to rear depth of said head as a whole and of said machine as a whole, when upright and in folded position, being small relative to said normal distance.

11. A portable sewing machine comprising a combined case and base having front, back and end walls, and a thin bottom adapted to rest on a table or the like; a sewing machine head adapted to lie fiat on or stand on said bottom and 25 including a feed mechanism support having a top bed portion, a standard, an arm disposed above said support and a needle bar housing all of equal front to rear dimensions, when the head is upright, substantially equal to the height of 30 said wall; and front and rear bed plates hinged to said case and adapted to lie in position to be flush with said top bed portion when the machine head is in upright operative position, and to lie fiat on said head when the headlies on the 3d bottom.

12. In combination, a combined case and base having a thin bottom, and front, backand end walls; a sewing machine head comprising a feed mechanism support having a top bed portion, a standard, an arm disposed a normal distance above said support, and a needle bar housing all of small front to rear dimensions when the head is upright about equal to the depth of the case; means for hinging the feed mechanism support to the case, whereby the machine head may assume lying position on said bottom or move to standing position supported directly and entirely on and by said bottom; a bed plate adapted to lie on said machine head when closed or disposable substantially flush with said top bed portion to form a continuation thereof when the machine head is in upright position; and means for locking said support to said bottom when the head is upright.

13. In combination, a combined case and base having a front, back and end wall, and a thin bottom adapted to rest on a table or the like;

a sewing machine head including a feed mechanism support having a top bed position, a standard, an arm disposed a normal distance above said support and a needle bar housing all of small equal front to rear dimensions relative to said distance; means whereby said head is connected to the case and is adapted to lie or stand in the -'65 case; and a bed plate hinged to said case in position to be flush with said top bed portion when the machine is in operative position, the top to bottom depth of said support. when the machine head is upright being substantially equal to the depth of said case.

14. In combination, a combined case and base having a bottom, and front, back and end walls; a rear bed plate hinged to the upper part of said mechanism support, a standard, an arm, and a case; a sewing machine head comprising a. feed needle bar housing; the upper rear part of said I sition.

15. In combination, a-combined case and base having a bottom, and front, back and end walls;

a rear bed plate secured to theupper rear part of said case; a sewing machine head comprising support when the machine head is in upright poa feed mechanism support having its upper part I hinged to the forward edge of the rear bed plate, whereby the machine may lie or stand on said bottom; a front bed plate movably secured to the top of the front wall of the case, and

. adapted to lie on said machine head, when closed,

or flush with the top of the feed mechanism support when the machine head is in operative position; a bracket piece hinged at one of the end walls of said case; and a cover board hinged to the top edge of said end wall and adapted to lie against said bed plates when closed or against said bracket when in outer position.

16. In combination, a case; a sewing machine head adapted to lie in the case or to stand therein and comprising a feed mechanism support, a standard, an arm and a needle bar housing all of substantially equal front to rear dimensions and forming a frame containable within the case; a feed mechanism drive means in part lying in said case when the machine is in operative position, and between the arm'and support when the head lies in the case.

17. In a portable domestic sewing machine, the combination of a head comprising a feed mechanism support having a top bed portion, a standard on the end of said support, an arm on the standard, and a needle bar support on the arm; all parts of said head being disposable, when the head is upright, substantially within the space between upright planes determined by the rear planes of said standard and needle bar support and the front planes of the standard and arm; and a bed member disposed relative to said head, when in use, substantially in the plane of said top bed portion, and relatively movable toward said space at least as far as a position in which a broad face of said bed member is substantially in contact with said space.

18. In combination, a sewing machine head comprising a feed mechanism support having a bed, a standard, an arm, and a needle bar support; and a motor for the head disposed below said bed when the machine is operative, and disposable, when the machine head is upright, entirely between said arm and the bottom of the head and between the standard and the needle bar support.

19. In combination, a machine head having a longitudinal main shaft in its lower part; a

frame pivoted coaxial with said main shaft; and

means for clamping said frame perpendicular to the plane of the arm, standard and needle-bar housing of said head.

20. A portable domestic sewing machine comprising a rectangular case and base having front, back and end walls, and a fiat bottom; a sewing machine head including a feed mechanism support having a top bed portion, a standard, an

arm, and a needle bar housing; one of the end.

walls adjacent to said needle bar housing having a ventilating opening therein; means whereby said head is pivotally connected to said case and is adapted to lie or stand on said bottom; bed plates hinged to said case in position to be flush with said support when the machine is in' op- -of the motor and near said ventilating opening; a bracket piece hinged at one end of said wall p to the deptli of the case;

with the opening therein and adapted to cover or uncover said opening; and a cover board hinged to the top edge of said end-wall and adapted to lie against said bed plates when closed or against said bracket-when in outer position.

21. A portable sewing machine comprising a combined case and base having front, back and end walls, and a thin bottom adapted to rest directly on a table or the like; a' sewing machine head adapted to lie or stand on said bottom, including a feed mechanism support, a standard, an arm disposed a normal distance above said support and a needle bar housing all of substantially equal front to rear dimensions about equal and bed plates secured to-said case in position to be flush with said top of said support when the machine-head is in upright operative position, and to lie'on the head when the head is on said bottom; said head being free of any fly wheel, whereby said standard may engage flat against said bottom, bed plates and an end wall simultaneously.

22. In combination, a base; a machine head receivable in said base or disposablein operative,

sewing relation on the base; and a foot-lifting lever projecting from said head and movable by said base into the space between the'front and rear planes of the head.

23. In combination, a machine head including a standard and a main shaft in the lower part of the standard; a frame pivoted co-axial with the main shaft; a motor on said frame and opera-' tively connected'to said mainshaft.

24. In combination, a frame; a machine head disposable in operative sewing relation on the frame and including a standard and a main shaft at the lower part of said standard; a gear mounted on said main shaft for rotating the main shaft; means for pivoting said frame on anaxis co-axial with the main shaft; a motor on said frame; and drive means between said motor and said gear; and means locking the head and frame at right angles to each other.

25. In combination, a machine head including a feed mechanism housing; a magnet frame pivoted to said housing; an armature in said magnet frame having an armature shaft rotatably mounted in said magnet frame' and operativelyconnected to said mechanism; the armature shaft, the yokes and poles of the magnet frame lying in the same main'plane disposable in the plane of the head.

26. In combination, a combined case and base; a machine head receivable in said case in the main central plane of the case or disposable in operative sewing relation on the base, and in eluding a feed mechanism housing; a main shaft in said housing; a magnet frame pivoted coaxial .with said shaft comprising poles and a yoke all substantially in the same plane with the main central plane of the case; and an armature in said magnet frame in said same plane having an armature shaft rotatably mounted in said mageluding a shaft at thelower part of the standard parallel to said arm; feed and stitch :forming mechanisms cooperating with said needle bar and driven by said shaft; a frame pivoted for movement in a plane radial to said shaft; and means for locking said standard upright relativeto said frame. I

29. A sewing machine head comprising a lower mechanism housing having a bed; a loop'taker beneath the bed; a bobbin winding member normally in said housing; a longitudinal drive shaft in the housing below said bed operatively connected to the loop taker; a motor beneath said bed; and means operatively connecting the motor with said shaft and member.

30. A sewing machine head comprising a lower mechanism housing having a bed thereon; feed and stitch forming mechanism in said housing including a loop taker and a longitudinal drive shaft for driving the loop taker and said mechanism; a bobbin winding member in said housing; a motor beneath the. bed; means beneath the bed for operatively connecting the motor with said member and shaft," and means for discon necting the drive shaft from the motor.

31. In combination. a machine head including a feed mechanism housing; a main shaft in said housing; a clutch collar fast on the main shaft; a gear loosely mounted on said main shaft; means holding the gear'in clutch with the clutch collar; bobbin winding means for moving the gear out of clutchand rotated by the gear; a motor and an operative connection between said motor and said gear.

32. In combination, a machine head including I a feed mechanism housimg; a main shaft in said frame of the head and having a bobbin-receiving end. adapted to be projected from the head. A

34. In combination, a sewing machine head having a needle bar housing; and a support for said head pivoted to said head on an axis between the front and rear planes of the housing, and movable'to a position substantially parallel to the plane of the head.

35. In combination, a sewing machine head; and a member cooperating with thehead to form a support for said head, said member being disposable entirely in the space between the front and rear planes of the head, and movable to a position in part exterior to said space.

36. In combination, a case having a thin flat bottom; asewing machine head adapted to stand on said bottom; a motor frame connected to said head and adapted to lie on'said bottom; said motor frame being disposable entirely within the space between the front and rear planes of the head, and movable to a position in part exterior tosaid space to cooperate with the lower part of the head to maintain the head in position.

3'7. In a portable domestic sewing machine, the combination of a head comprising a feed mechanism support, a standard on the end of the support, an arm on thestandard, and a needle '10 bar support on the arm; all parts of said head being disposed, when the head is upright, substantially within the space between two upright front and rear planes,.the rear plane being determined by the rearmost faces of said standard and needle bar support, the front plane being determined by the front faces of the standard and arm; and a bed member disposed relative to said head, when in use, substantially in the plane determined by the top face of said mechanism support; said bed member being movable toward said space at least as far as to a position in which all of a broad face of the bed member is substantially in contact with said space.

38. In combination, a sewing machine head comprising a feed-mechanism housing, a standard thereon, an arm on the standard and a needle bar support carried by the arm over an extreme end of said housing; a feed dog at the extreme end of said housing; a rotary shuttle closely adjacent to the feed dog between the dog and the standard; a casing in which said head is pivotal to lie or stand and having one end wall almost in contact with said dog and standard respectively; said housing having a top bed portion; and a cover hinged to the end wall adjacent to the dog and disposable over the head when the head lies, and horizontally disposable in the plane of the bed when the head stands; the hinged end I of the cover being almost in contact with the dog.

39. In combination, a combined case and base having a substantially vertical end wall having an opening therein; a lid for the base and openable to a position above said opening, thereby to prevent work cloth from closing said opening; a machine head snugly receivable in said base or disposable in operative sewing relation ,on the base; a motor having rheostat resistance adjacent to said opening.

40. In combination, a combined case and base; a motor movably mounted in the base; a machine head driven by and movable relative to the motor and receivable entirely in said base or disposable in operative sewing relation on the base; and a releasable clamp for clamping the base, the head and the motor together in contact with each other.

41. In combination, a drive member and a driven member, coaxial with each other and longitudinally slidable relative to each other; stitch mechanism driven by the driven member; a winder adapted to be driven by the drive member; and means operated bysaid winder for connecting said members when one of said members is moved as a whole relative to the other member 65 as a whole in one direction and disconnecting them when the relative movement is in the opposite direction. a

42. In combination, a sewing machine head having a bed and a mechanism, housing beneath the bed; a pair of coaxial rotary members in said housing, the members being longitudinally slidable relative to each other, one member being within the other, one member being supported throughout the major part of its length by the 75 other; a motor driving one of said members; a I

loop taker driven by the other member; one of said members being provided with a recess at one end, the other being provided'with a projection fast and rigid thereon engageable in the recess to clutch said members together, to cause the motor to drive the loop taker; one of said members as a whole being longitudinally movable relative to the other member to effect removal of said notch from said projection thereby to declutch said members from each other to permit rotation of the motor-driven member while the other member and the loop taker are at rest; and bobbin winding means normally within said housing and adapted to be rotated by the motor-driven member while the members are declutched, for winding a bobbin while the loop taker is at rest.

43. In a sewing machine, an actuating shaft, an electric motor having a shaft, gearing con- ,necting said motor shaft to said actuating shaft and including a gear, coaxially rotary on said actuating shaft, and slidable on said actuating shaft for disconnectingsaid shaft of said motor from said actuating shaft, a bobbin winder, means for sliding said gear and connecting said bobbin winder to said motor.

44. In a sewing machine, a bed, an actuating shaft and an electric motor beneath said bed, said motor having a shaft, gearing connecting the motor shaft to said actuating shaft, said gearing including a gear coaxial on and rotary on said actuating shaft and slidable for disconnecting said motor shaft from said actuating shaft, a bobbin winder, means for connecting said bobbin winder to said motor whenever said motor shaft is disconnected from the actuating shaft.

45. A portable sewing machine comprising a frame including a standard, an arm thereon, and a feed mechanism support carrying the standard and including a bed portion, transverse members and connecting members; said standard, said bed portion and said members comprising a one-piece integral unitary structure; said transverse and connecting members forming a recessed space open at the under side; work feeding and stitch forming mechanism mounted in said frame; a flat base on which said mechanism support rests, with certain of said transverse and connecting members in engagement with the base; a motor mounted over said base, adjacent thereto and having a rotary part extending into said recessed space; a sewing machine drive shaft journaled in said mechanism support; and means connecting the rotary part with the drive shaft.

46. In a portable sewing machine, the combb nation of a head comprising a feed mechanism support having a top bed portion, a standard on the end of the support, an arm on the standard, and a needle bar support on the arm; a bed member; means connecting the bed member to the head and disposing the bed member relative to said head, when in use, substantially in the plane determined by the top face of said bed portion; said bed member being movable substantially into contact with the space directly under said needle bar support when upright.

47. In a portable sewing machine, the combination of a head comprising a feed mechanism support having a top bed portion, a standard on the end of the support, an arm on the standard, and a needle bar support on the arm; a bed member; hinge means pivotally connecting the bed member to the needle-end edge of the bed portion and disposing the bed member relative to said head, when in use,'substantially in the plane determinedby the one-piece structure; said 0 tending into said. recessed space;

nism mounted in said frame;

, top face of said bed portion; said had member being movable substantially into contact with the space directly under some part on said needle bar support when upright.

48. A portable sewing machine comprising a frame including a standard, an arm thereon, and a feed mechanism support carrying the standard and including a bed portion, supporting portions and connecting members; said standard, said portions and said members comprising an integral portions and connecting members forming a recess space in part open at one side; work feeding and stitch forming mechaa flat base on which said mechanism support rests, with certain of said portions and connecting members in engagement with the base; a motor mounted over said base, adjacent thereto and having a rotary part exa sewing machine drive shaft journaled in said mechanism support; and means connecting the rotary part with-the drive shaft.

49. A portable sewing machine comprising a frame including a hollow bed portion open at its underside and including a work and needle receiving top plate, a completely operative work feeding and stitch forming mechanism mounted in said frame, a base member on which said bed portion directly rests and to which it is detachably secured, a motor mounted on said base member and having a motor shaft extending into the hollow spacein said bed portion, said hollow space and the'motor frame extending upwardly from said base member as far as the level of the bottom of said top plate, a sewing machine drive shaft journaled in said bed portion, and means connecting the motor shaft. to the drive shaft.

HOWARD M. KILPATRICK. 

